Hair Color History

The first major breakthrough in hair color history came in 1863, when chemist Dr. August Wilhelm von Hofmann reported hair dye properties of para-phenylenediamine (PPD). Learn more »

Biology Basics

Hair is composed of proteins (keratin) embedded in a sulphur-rich matrix encased in a sheath of overlapping scales. Learn more »

Chemistry At-a-Glance

Most oxidative dye formulas contain two or more ingredients that act as dye precursors or couplers, essential ingredients common to most permanent dyes. Learn more »

Old Science vs. New Science

Exploring the damage caused by current oxidants, it is apparent that an improved option would have numerous benefits for preserving hair integrity. Learn more »

Hair Color Explored

Dyes are formulated to give hair long-lasting and richly hued colors, but several factors - from mechanical to environmental - can accelerate color changes and fading. Learn more »

The Bigger Picture

Free radicals have long been known to damage proteins, oils and other important chemical compounds. Learn more »

What's Next

New understandings in genetics and biology and the role of DNA in dictating the color, condition and health of hair are taking hair-coloring technology into a whole new realm. Learn more »

Summary

Quickly learn about the Hair Color Research Update. Learn more »

References

View the publications and studies referred to in this research update. Learn more »